SYNTHESIS, CHARACTERIZATION AND PERFORMANCE OF CNTsSUPPORTED BIMETALLIC NANOCATALYSTS IN FISCHER-TROPSCH REACTION

Fischer-Tropsch Synthesis (FTS) is a very important process which deals with the chemical conversion of synthesis gas into hydrocarbons and oxygenates with a broad range of chain lengths and functionalities. FTS has a potential to produce liquids fuels and chemicals from a variety of chemical...

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Main Author: ALI, SARDAR
Format: Thesis
Language: English
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-utpedia.21309 /
Published: 2012
Subjects:
TP Chemical technology
Online Access: http://utpedia.utp.edu.my/21309/1/2012%20-CHEMICAL%20-%20SYNTHESIS%2C%20CHARACTERIZATION%20AND%20PERFORMANCE%20OF%20CNTS-SUPPORTED%20BIMETALLIC%20NANOCATALYSTS%20IN%20FISHER-TROPSCH%20REACTION%20-%20SARDAR%20ALI.pdf
http://utpedia.utp.edu.my/21309/
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spelling utp-utpedia.213092021-09-27T09:01:01Z http://utpedia.utp.edu.my/21309/ SYNTHESIS, CHARACTERIZATION AND PERFORMANCE OF CNTsSUPPORTED BIMETALLIC NANOCATALYSTS IN FISCHER-TROPSCH REACTION ALI, SARDAR TP Chemical technology Fischer-Tropsch Synthesis (FTS) is a very important process which deals with the chemical conversion of synthesis gas into hydrocarbons and oxygenates with a broad range of chain lengths and functionalities. FTS has a potential to produce liquids fuels and chemicals from a variety of chemical feedstocks such as natural gas, coal and biomass. Industrially alumina (Ab03) and silica (Si02) supported cobalt (Co) based are extensively used. There are some problems associated Co-based catalysts supported on conventional metal oxides such as metal-support mixed oxide formation, sintering. lower reducibilties and dispersion. The objective of this project was to synthesize. characterize and evaluate the performance of CNTs-supported bimetallic nanocatalysts in a Fischer-Tropsch Synthesis (FTS). The bimetallic nanocatalyst systems consisted of Co-Fe, Co-Mn and Co-Mo. A total metal loading of 5 weight % and various formulations (Co/CNTs, 70Co30M/CNTs, 50Co50M/CNTs. 30Co70M/CNTs and M/CNTs) have been synthesized using a wet impregnation method on CNTs support. The effects of promoters such as potassium (K), niobium (Nb), copper (Cu) and platinum (Pt) at various levels, on the physicochemical properties of the nanocatalysts have been investigated. The physicochemical properties of the nanocatalysts were investigated using N2 physical adsorption, field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), CO-chemisorption, hydrogen temperature-programmed desorption (H2-TPD), temperature-programmed oxidation (TPO), carbon dioxide temperature-programmed desorption (COr TPD) and hydrogen temperature�programmed reduction (H2-TPR). The performance of all the synthesized catalysts in FTS was investigated in a fixed-bed microreactor at atmospheric pressure and various feed ratios of the reactants (H2/CO). temperature, and space velocity while selected nanocatalysts were investigated at 20 bar. 2012-09 Thesis NonPeerReviewed application/pdf en http://utpedia.utp.edu.my/21309/1/2012%20-CHEMICAL%20-%20SYNTHESIS%2C%20CHARACTERIZATION%20AND%20PERFORMANCE%20OF%20CNTS-SUPPORTED%20BIMETALLIC%20NANOCATALYSTS%20IN%20FISHER-TROPSCH%20REACTION%20-%20SARDAR%20ALI.pdf ALI, SARDAR (2012) SYNTHESIS, CHARACTERIZATION AND PERFORMANCE OF CNTsSUPPORTED BIMETALLIC NANOCATALYSTS IN FISCHER-TROPSCH REACTION. PhD thesis, Universiti Teknologi PETRONAS.
institution Universiti Teknologi Petronas
collection UTPedia
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
ALI, SARDAR
SYNTHESIS, CHARACTERIZATION AND PERFORMANCE OF CNTsSUPPORTED BIMETALLIC NANOCATALYSTS IN FISCHER-TROPSCH REACTION
description Fischer-Tropsch Synthesis (FTS) is a very important process which deals with the chemical conversion of synthesis gas into hydrocarbons and oxygenates with a broad range of chain lengths and functionalities. FTS has a potential to produce liquids fuels and chemicals from a variety of chemical feedstocks such as natural gas, coal and biomass. Industrially alumina (Ab03) and silica (Si02) supported cobalt (Co) based are extensively used. There are some problems associated Co-based catalysts supported on conventional metal oxides such as metal-support mixed oxide formation, sintering. lower reducibilties and dispersion. The objective of this project was to synthesize. characterize and evaluate the performance of CNTs-supported bimetallic nanocatalysts in a Fischer-Tropsch Synthesis (FTS). The bimetallic nanocatalyst systems consisted of Co-Fe, Co-Mn and Co-Mo. A total metal loading of 5 weight % and various formulations (Co/CNTs, 70Co30M/CNTs, 50Co50M/CNTs. 30Co70M/CNTs and M/CNTs) have been synthesized using a wet impregnation method on CNTs support. The effects of promoters such as potassium (K), niobium (Nb), copper (Cu) and platinum (Pt) at various levels, on the physicochemical properties of the nanocatalysts have been investigated. The physicochemical properties of the nanocatalysts were investigated using N2 physical adsorption, field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), CO-chemisorption, hydrogen temperature-programmed desorption (H2-TPD), temperature-programmed oxidation (TPO), carbon dioxide temperature-programmed desorption (COr TPD) and hydrogen temperature�programmed reduction (H2-TPR). The performance of all the synthesized catalysts in FTS was investigated in a fixed-bed microreactor at atmospheric pressure and various feed ratios of the reactants (H2/CO). temperature, and space velocity while selected nanocatalysts were investigated at 20 bar.
format Thesis
author ALI, SARDAR
author_sort ALI, SARDAR
title SYNTHESIS, CHARACTERIZATION AND PERFORMANCE OF CNTsSUPPORTED BIMETALLIC NANOCATALYSTS IN FISCHER-TROPSCH REACTION
title_short SYNTHESIS, CHARACTERIZATION AND PERFORMANCE OF CNTsSUPPORTED BIMETALLIC NANOCATALYSTS IN FISCHER-TROPSCH REACTION
title_full SYNTHESIS, CHARACTERIZATION AND PERFORMANCE OF CNTsSUPPORTED BIMETALLIC NANOCATALYSTS IN FISCHER-TROPSCH REACTION
title_fullStr SYNTHESIS, CHARACTERIZATION AND PERFORMANCE OF CNTsSUPPORTED BIMETALLIC NANOCATALYSTS IN FISCHER-TROPSCH REACTION
title_full_unstemmed SYNTHESIS, CHARACTERIZATION AND PERFORMANCE OF CNTsSUPPORTED BIMETALLIC NANOCATALYSTS IN FISCHER-TROPSCH REACTION
title_sort synthesis, characterization and performance of cntssupported bimetallic nanocatalysts in fischer-tropsch reaction
publishDate 2012
url http://utpedia.utp.edu.my/21309/1/2012%20-CHEMICAL%20-%20SYNTHESIS%2C%20CHARACTERIZATION%20AND%20PERFORMANCE%20OF%20CNTS-SUPPORTED%20BIMETALLIC%20NANOCATALYSTS%20IN%20FISHER-TROPSCH%20REACTION%20-%20SARDAR%20ALI.pdf
http://utpedia.utp.edu.my/21309/
_version_ 1741195729584521216
score 11.62408

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